Guam, the Pacific island that is a USA territory, posted emergency guidelines on Friday to help residents prepare for any potential nuclear attack after a threat from North Korea to fire missiles in its vicinity.
Specifically, the statement mentioned a potential strike on Andersen Air Force Base designed "to send a serious warning signal to the USA".
"North Korea better get their act together, or they are going to be in trouble like few nations have ever been in trouble", Trump said, flanked by Vice-President Mike Pence.
Trump's latest comments were a continuation of days of incendiary rhetoric, including his warning on Tuesday that the United States would unleash "fire and fury" on Pyongyang if it threatened the United States.
There's a sense of patriotism among those who cite the island's history of Guam residents serving in the US military.
Todd and Mitch Thompson, two brothers who are both lawyers on Guam, said they haven't seen anyone panicking or stocking up on supplies. "It is just a shame that such infrastructure is not advertised well to the public and that we are short of emergency supplies", said Yang Uk, senior fellow at Korea Defense and Security Forum, a research institute in Seoul.
Rather, Seoul wants to double the maximum payload to 1,000 kg or greater, powerful enough to target underground bunkers or nuclear sites within the North, the officials said. "But here are some people who believe. that we are completely safe regardless of what happens".
About 40 percent of Guam's residents are Chamorros, the name for the native people.
Its importance has declined since World War II, given the creation of military bases in Japan and South Korea, but analysts say it still plays a key role in the Pacific.
North Korea wants an end to annual military drills between the United States and South Korea that it condemns as invasion rehearsals, and the removal of tens of thousands of USA troops stationed in the South. Many refugees fleeing Vietnam were evacuated through Guam.
Japan lies only about 620 miles to the east of North Korea. The plan would be sent to leader Kim Jong Un for approval just before or as the U.S.
The local government of the US Pacific island has issued guidelines for preparation.
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However, "Guam's importance is reliant on the behavior of our allies".
North Korean state media has reported that the country is considering plans to strike Guam this month.
Guam's Homeland Security Advisor George Charfauros told CNN that despite Guam's strategic importance and the North Korean threats to strike it, he remains confident of the island's defenses.
It is also a permanent home to a Terminal High Altitude Area Defense (THAAD) interceptor. "There are several layers of ballistic missile defense". It is about 2,200 miles (3,500 km) southeast of North Korea, much closer than it is to any of the United States.
The Pentagon then chose to send two strategic B-1B bombers, which are stationed in Guam, to the outskirts of the Korean peninsula in response to the threats.
The bombers flew out of Andersen Air Force Base in Guam as part of the US Air Force's "continuous bomber presence", according to an Pacific Air Forces spokesman.
Asian travelers, mainly Japanese and South Koreans, are still landing at the airport and it's tough to find a room at one of the vacation resorts dotted around the island.
Pyongyang did not develop its nuclear capability to be the aggressor in a war with the U.S., says CNN Military Analyst Rick Francona.
Most of the North Korea's weapons have landed in the Sea of Japan.
Reintroducing nuclear weapons remains an unlikely scenario, as that would undermine demands from Seoul and Washington for North Korea to abandon its nuclear programs.
"There's been a lot of rhetoric coming out", Calvo said at a news conference Wednesday.
On June 5, 2015, Guam became the first USA territory to legalize same-sex marriage.